test: Improve E2E test firewall creation and teardown

[ykim-akamai]

📝 Description

Here are some improvements around creation and deletion of E2E Test Firewall:

• Now it will show the entire PLAY RECAP when there is failure in any of the playbook steps
• Firewall will be teardown regardless of the test result but it will still return the correct exit code at the end

✔️ How to Test

git submodule update --init may be required if submodule directory isn't downloaded locally

Verifying error handling when firewall creation fails:

1. export wrong LINODE_TOKEN
2. make create-e2e-firewall

Verifying proper teardown when test execution fails:

1. Make a test to fail with any reason (e.g. change some assertion arbitrarily)
2. Run the test e.g. make TEST_ARGS="-v domain_basic" test
3. Test returns failure and cloud firewall is teared down

📷 Preview

If applicable, include a screenshot or code snippet of this change. Otherwise, please remove this section.

[yec-akamai]

I tested locally a failed integration test, but still can find the e2e firewall is not cleaned up. Also I find the error output is not rendered in color as it used to be, which makes it a bit more difficult to find the error message in the output. Could you also look into that?

[yec-akamai]

Tested locally with a failed case and the firewall was cleaned up successfully! Also output is rendered normally. Nice work 🎉

[zliang-akamai]

Works well on my end, nice work!